TNPSC Chemistry Previous Old Year Question Papers - 1

Question: 1

Which of the following gas is used in extinguish fire?

(A) Nitrogen

(B) Carbon dioxide

(C) Carbon Monoxide

(D) Neon

Question: 2

Which of the following alloys is used for making magnets?

(A) Alnico

(B) Magnelium

(C) Duralumin

(D) Stainless steel

Question: 3

Which one of the following is not a mixture?

(A) Toothpaste

(B) Vinegar

(C) Baking soda

(D) Toilet soap

Question: 4

Which of the following is not a physical change?

(A) Distillation of water

(B) Powdering of glass

(C) Burning of an electric lamp

(D) Action of heat on potassium chlorate

Question: 5

Which of the following is the lighest metal?

(A) Lithium

(B) Lead

(C) Mercury

(D) Silver